479866366891 has 2 divisors, whose sum is σ = 479866366892. Its totient is φ = 479866366890.

The previous prime is 479866366873. The next prime is 479866366939. The reversal of 479866366891 is 198663668974.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 479866366891 - 2²⁹ = 479329495979 is a prime.

It is not a weakly prime, because it can be changed into another prime (479866366801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239933183445 + 239933183446.

It is an arithmetic number, because the mean of its divisors is an integer number (239933183446).

Almost surely, 2^479866366891 is an apocalyptic number.

479866366891 is a deficient number, since it is larger than the sum of its proper divisors (1).

479866366891 is an equidigital number, since it uses as much as digits as its factorization.

479866366891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 564350976, while the sum is 73.

The spelling of 479866366891 in words is "four hundred seventy-nine billion, eight hundred sixty-six million, three hundred sixty-six thousand, eight hundred ninety-one".